Ethyl mercaptan is added to LPG

Options

A. to give colour to it
B. to give volume to it
C. to give smell to it
D. to make it liquid.

Explanation

### Step-by-Step Solution:

1. **Understanding LPG**: LPG stands for Liquefied Petroleum Gas, which is primarily composed of hydrocarbons such as butane and propane. These gases are commonly used as fuel for heating, cooking, and other applications.

2. **Properties of LPG**: One important characteristic of LPG is that it is odorless in its natural state. This means that if there is a leak, it would be difficult for users to detect it without any added substances.

3. **Need for an Odorant**: Since LPG is used in households and can be dangerous if leaked, it is crucial to have a way to detect any leaks. An undetected gas leak can lead to serious accidents, including fires or explosions.

4. **Role of Ethyl Mercaptan**: Ethyl mercaptan is a chemical compound that has a strong, unpleasant smell (often described as similar to rotten eggs). It is added to LPG to provide a distinct odor.

5. **Safety Measure**: The addition of ethyl mercaptan serves as a safety measure. If there is a leak in the LPG system, the smell of ethyl mercaptan will alert users to the presence of gas, allowing them to take necessary precautions to avoid accidents.

6. **Conclusion**: Therefore, ethyl mercaptan is added to LPG to ensure safety by providing a detectable odor in case of gas leaks.